main.js (1551B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2018 The Stdlib Authors. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 'use strict'; 20 21 // MODULES // 22 23 var Complex128 = require( '@stdlib/complex/float64' ); 24 var Complex64 = require( '@stdlib/complex/float32' ); 25 26 27 // MAIN // 28 29 /** 30 * Tests if a value is a complex number-like object. 31 * 32 * @param {*} value - value to test 33 * @returns {boolean} boolean indicating if a value is a complex number-like object. 34 * 35 * @example 36 * var Complex128 = require( '@stdlib/complex/float64' ); 37 * var Complex64 = require( '@stdlib/complex/float32' ); 38 * 39 * var x = new Complex128( 4.0, 2.0 ); 40 * var bool = isComplexLike( x ); 41 * // returns true 42 * 43 * x = new Complex64( 4.0, 2.0 ); 44 * bool = isComplexLike( x ); 45 * // returns true 46 */ 47 function isComplexLike( value ) { 48 if ( value instanceof Complex128 || value instanceof Complex64 ) { 49 return true; 50 } 51 return ( 52 typeof value === 'object' && 53 value !== null && 54 typeof value.re === 'number' && 55 typeof value.im === 'number' 56 ); 57 } 58 59 60 // EXPORTS // 61 62 module.exports = isComplexLike;